Studies on the Antiviral Activity of Protein Kinase Inhibitors against the Replication of Vesicular Stomatitis Virus

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概要

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• Several derivatives of K-252a, a protein kinase inhibitor isolated from Nocardiopsis sp., were investigated for their effects on the replication of vesicular stomatitis virus (VSV) in BHK-21 cell cultures. Among those we tested, KT5926,which preferentially inhibits the myosin light chain kinase (MLCK), suppressed the viral replication by 95-99% at 15μм. K-252a, which inhibits a broad spectrum of cellular protein kinase, similarly affected the viral replication. Other derivatives, KT5720 and KT5823,that are known to inhibit the cAMP-dependent protein kinase (PKA) and cGMP-dependent protein kinase (PKG), respectively, did not suppress VSV replication even at a high concentration as 15μм. None of these inhibitors affected the Sindbis virus replication in BHK-21 cells under similar assay conditions as used for VSV. KT5926 and K-252a seemed to affect the VSV replication at the step (s) after the viral invasion, resulting in decreased viral RNA synthesis. Neither substance inhibited cellular casein kinase (CK) II which is known to be involved in phosphorylation of the nonstructural (NS) protein, a non-catalytic subunit of the viral RNA polymerase. These results suggest that the inhibition of VSV replication by KT5926 and K-252a is not a secondary effect due to generalized suppression of host cell activities, and that the VSV replication requires the KT5926-sensitive function (s) in the cell which would be performed by an enzyme (s) other than CK II.

• 社団法人日本薬学会の論文
• 1995-06-15

著者

• Kawai A

  Department Of Molecular Microbiology Graduate School Of Pharmaceutical Sciences Kyoto University

• Kawai Akihiko

  Department Of Molecular Microbiology Graduate School Of Pharmaceutical Science Kyoto University

• Kawai A

  Kyoto Univ. Kyoto Jpn

• 金 英淑

  Department of Molecular Microbiology, Faculty of Pharmaceutical Sciences, Kyoto University

• 相良 淳二

  Department of Molecular Microbiology, Faculty of Pharmaceutical Sciences, Kyoto University

• 河合 明彦

  Department of Molecular Microbiology, Faculty of Pharmaceutical Sciences, Kyoto University

• 金 英淑

  Department Of Molecular Microbiology Faculty Of Pharmaceutical Sciences Kyoto University

• Sagara Junji

  Department Of Molecular Microbiology Faculty Of Pharmaceutical Sciences Kyoto University

• Kim Young-sook

  Department Of Molecular Microbiology Faculty Of Pharmaceutical Sciences Kyoto University

• Kawai A

  Department Of Molecular Microbiology Faculty Of Pharmaceutical Sciences Kyoto University

• 河合 明彦

  Department Of Molecular Microbiology Graduate School Of Pharmaceutical Sciences Kyoto University

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